2. Materials and methods
2.1 Sampling sites and sediment collection
In June 2022, 15-cm-thickness surface sediment samples were collected using a Peterson grab sampler from the center location of Shangjinhu Lake (114º11′31″N, 30º38′22″E), one sub-lake of Jinyinhu Lake, located in Wuhan, China. Then, the collected samples were immediately transported to the laboratory for preservation. A portion of the sediment samples were used for the determination of physicochemical properties. The remaining sediment samples were filtered with a sieve to remove large dinas and residues of animals and plants for subsequent planting experiments. The contents of organic matter (OM), total nitrogen (TN), and total phosphorus (TP) in the sediments in Shangjinhu Lake were 77.50 g kg-1, 3.13 g kg-1, and 0.82 g kg-1, respectively.